io/sfxge/sfxge_bar.c

	sfxge_bar.c revision 49ef7e0638c8b771d8a136eae78b1c0f99acc8e0
/*
 * Copyright (c) 2008-2016 Solarflare Communications Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are
 * those of the authors and should not be interpreted as representing official
 * policies, either expressed or implied, of the FreeBSD Project.
 */

#include <sys/types.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/stream.h>
#include <sys/dlpi.h>

#include "sfxge.h"

int
sfxge_bar_init(sfxge_t *sp)
{
    efsys_bar_t *esbp = &(sp->s_bar);
    ddi_device_acc_attr_t devacc;
    int rc;

    devacc.devacc_attr_version = DDI_DEVICE_ATTR_V0;
    devacc.devacc_attr_endian_flags = DDI_NEVERSWAP_ACC;
    devacc.devacc_attr_dataorder = DDI_STRICTORDER_ACC;

    if (ddi_regs_map_setup(sp->s_dip, EFX_MEM_BAR, &(esbp->esb_base), 0, 0,
        &devacc, &(esbp->esb_handle)) != DDI_SUCCESS) {
        rc = ENODEV;
        goto fail1;
    }

    mutex_init(&(esbp->esb_lock), NULL, MUTEX_DRIVER, NULL);

    return (0);

fail1:
    DTRACE_PROBE1(fail1, int, rc);

    return (rc);
}

void
sfxge_bar_fini(sfxge_t *sp)
{
    efsys_bar_t *esbp = &(sp->s_bar);

    ddi_regs_map_free(&(esbp->esb_handle));

    mutex_destroy(&(esbp->esb_lock));

    esbp->esb_base = NULL;
    esbp->esb_handle = NULL;
}